Bearing.



G. n. HOWARD.

BEARING. APPLICATION FILED mu: ls. l 9l6. 1,232,31 2. Patented July 3,1917.

2 SHEETSSHEET I Wibuwom G. D. HOWARD.

BEARING.

Armenian FILED JUNE 16.1916.

Patented July 3, 1917.

2 SHEETSSHEET 2- wuawtoz UNITED STATES PATENT OFFICE.

GEORGE D. HOWARD, OF SALISBURY, NORTH CAROLINA, ASSIGNOR OF ONE-THIRD TOP. A. WALLENBORN AND ONE-THIRD TO GEORGE B. COLLINS, BOTH OF SALISBURY,

NORTH CAROLINA.

BEARING.

Patented July 3, 191 '7.

Application-filed June 16, 1913. Serial No. 104,018.

7% all whom/it may concern:

Be it known that I, Gnonen D. HOWARD, a citizen of the United States,residingat Salisbury, inthe county of Rowan and State of North Carolina,have invented new and useful Improvements in Bearings, of which thefollowing is a specification.

This invention relates to improvements in crushing machines of thegyratory type, and is particularly directed to means for facilitatmg theremoval and replacement of the eccentric bearing for the gyratory shaftof such machines.

In crushing machines of this class the gyratory shaft, carrying thecrusher head, is supported or suspended from its outer end and has itslower endreceived in an eccentric bearing that is arranged in an oilwell provided in the bottom plate of the machine and to this bearing issecuredthe beveled toothed operating wheel for the shaft, the constantwear to which the eccentric bearing is subject soon results in seriousdamage thereto, and consequently the necessity for the frequentreplacement of the worn hearing by a new one. The removal of an oldbearing constitutes a task of considerable magnitude, it beingunderstood that the machine is of a heavy construction and that thebottom plate and the drive wheel are of such size, proportion and weightwhereby the same can be handled by a man of average strength, but withthe ordinary construction of this class of crushers, its necessary toresectlonal vlew of the 'eccentrlc,

move the plate and consequently the bearing which rests in the well ofthe said' plate and the heavy drive wheel which is connected with thebearing. To change the bearing in a crusher of the old type of suchmachines would require the work of a large force of laborers forapproximately twentyfour hours, while to change the eccentric upon theimproved class of these machines,

on which certain provisions are made for' the removal of the actuatingmeansof the machine, the same force of laborers are required, but thework can be accomplished in approximately eight hours time. p

' With my improvement I aim to produce a construction wherein the partsare so constructed and arranged that the beveled operating wheel iskeyed to the eccentric, and the said key being accessible from theexterior of-the machine, through the opening through which the powershaft, having the pinion which co-acts with the referred to beveledoperatln wheel, passes so that the .same may be rea ily removed whenrequired and I connect the eccentric bearing with the operating wheel insuch a manner as to permit of the ready disassociation of these memberswhen the locking key is removed, and also I provide the bottom of thewell at the end of bottom plate of the machine with a removable closurefastened thereto by cap screws, whereby the said closure ma be readllydetached when desired to permit of the removal of the eccentric throughthe well of the said bottom plate without otherwlse interfering with theoperating wheel,

the shaft or any of the actuating mechanism' of the crusher, and whereinan eccentric can be replaced at a period of time which Fig. 3 is a planview of the eccentric,

Fig. 4 is a sectional View approximately on the line .4-4 of Fig. 2,

Fig. 5uis a face view of the bottom plate for the machine constructed inaccordance with the idea,

Fig. 6 is a sectional view approximately an the line 6 6 of Fig. 5,

Fig. 7 is a similar sectional-view approximately on the line 77 of Fig.5, and

Fig. '8 is a horizontal sectlonal view approximately on the line 8-8 ofFig. 1.

For the purpose of illustration I have found it necessaig to show onlythe lower portion of a crus ing machine ofthe gyratory type, such, forinstance, as that in which the gyratory shaft 10 which carries thecrusher head (not shown is supported or suspended from its top andispo'se'd'cem trally of the machine'll. Th e shellof the machineisrovided with the usual open bottom which, in the present instance isclosed by a bottom plate 12 constructed in accordance with m1nvention,-the said bottom plate being he ted or otherwise secured to'the machine frame or shell and being centrally provided with thedepending sleeve portion providing the well 13. The well-413 in thepresent instance, has its lower and open portion closed by a plate 14,the plate being secured to the said well by cap screws 15, and the plate14 is preferably centrally provided with a threaded aperture forming anoil outlet, which aperture is closed by a threaded plug 16. Theinnerface of the late 12, above the well 13, is centrally ibrmed with anannular extension or flange 17 as well as with an annular lip 18surrounding the said flange and contacting with the inner edge of thewall provided b the opening closed by the plate 12. Ba ially disposedribs 19 are arranged between the flange 17 and the lip 18. The flange 17is also surrounded by an annular member 20 which is also connected bythe ribs 19, and the plate 12, between the flange and the annular member20 is provided with a plu rality of vertically disposed ports 21 havingspaced outlet openings 22 communicating with the bore of the well 13,while the said plate'upon its upper face is provided with an inlet orduct 23 having a pipe member 24 connected therewith, and the said pipemember communicates with a source of oil supply whereby a lubricant canbe fed to the well 13 and to the bearing member as well as thebushingfor the bearing member which will presently be described.

The shell of the device, at the bottom thereof, is )rovided upon itsside opposite the chute c iamber 25 with an opening 26 within which isarranged a bearing 27 and a horizontally disposed power shaft 28 thathas its inner end provided with a beveled; toothed pinion 29 whichmeshes with the beveled toothed wheel 30. The bore of the whecl30receives the reduced end of the gyratory shaft 10, the said bore,however, being of a materially greater area than the cross sectionaldiameter of the end'of the shaft 10 and this bore isprovided with rightangularly disposed vertically arranged grooves 3131. The hub 32 of theoperating wheel 30 rests upon the flange 17 of the late 12 and bears,upon anti-frictional mem ers arranged between the said hnb and the saidflange. The bore of the hub has passed therethrough the upper andwidened end of a bearing member 33, the said bearing .bein provided withan ecoentrically arranged ore 34 which receives the reduced end 35 ofthe operating shaft 10 as well as the reduced extension 36 of the saidshaft. It will thus be noted that the bore of the bearing 33 is of twodiameters, the lower portion of the said bore being indicated fordistinction by the numeral 37 and this portion of the bearing isprovlded with a plurality of ports 38 which'oommumcate with the oilports 22 in the well or sleeve 13 of the plate 12. The lower "portion 37of the bearing 33 also, for approximately one-half of its diameter, isprovided with horizontally disposed reduced substantially semiannularmembers 39 around which is arranged a bearing surface 40 such, forinstance, as Babbitt metal which is shaped to agree with thecircumferential shape of the bore of the bearin and which receives thethrust from the reduced extension 36 of the gyratory shaft 10 to prolongthe life of the bearing. The upper end of the eccentric bearing 33 isprovided with i right angularly disposed outwardly projecting lugs 4141which are of a size tobe received in the grooves 31 in the bore of thehub 32 of the operating wheel 30, when the bearing is rotated to bringits lugs into alinement with the said grooves. The upper end or hub ofthe bearing 33, between two of the referred to lugs 41, is provided witha vertically disposed depression or groove 42 which is adapted toregister with one of the grooves 31 in the bore of the operating wheel30, and these registering grooves are adapted to receive a key 43 whichis passed through the openings 26 in the shell of the machine and whichkey effectively locks the operating wheel 30 to the bearing 33. Byreference to the drawings it will be noted that the shouldered end 35 ofthe gyratory shaft and its reduced extension 36 are loosely positionedwithin the hearing so that other gyratory or rocking movement of theshaft will not be interfered with, but in order to effectively sustainthe bearing in the well 33, I provide a sleeve or bushing member 44which surrounds the lower or reduced end of the said bearing and whichrests upon the closure plate 14 of the well '13 of the bottom plate 12.To secure this bushing 44 I provide the same with a transverse openingand I also provide the well with an opening which is adapted to alinewith the said transverse opening these registering openings the shank ofa headed bolt 45. the threaded end of the bolt haling screwed thereon anut 46. v

s -to which the bearing is subjected by the gy-- ratory shaft soonresults in'serious damage to the bearing and consequently the replacingthereof by a new bearing. To accom-- plish this I remove the closureplate 14 by unscrewin the cap screws 15. I then remove the olt 45 fromthe well and from its engagement with the bushing 44. Then I ass onehand through the opening 26 and withdraw the key 43 which connects theoperating wheel to the hearing. I then turn and I pass through reviouslystated the thrust or-strain with the grooves 31 in the hub of theoperating wheel 30. This permits of the bearing 33 dropping through thewell 13 of the bottom plate -'12 and, as also previously stated, I havefound from practice that the removal of the old bearin and the replacingof a new bearing there or can be accomplished by a single man in lessthan one hours time.

Having thus described the invention, what is claimed as new is:'

1. In combination with a power wheel and a shaft having a reduced endextending through the bore of the said power wheel, of a bearing memberhaving an eccentric bore to receive the end of the shaft, said bearingmember havingits upper end provided .with outstanding lugs whichnormally rest upon the top of the power wheel and which when the bearingis turned upon the said power wheel wil register with the grooves in thebore of the said wheel, whereby to ermit ofthe disassociation of thebearing rom the power wheel and from the shaft, and means for normallylockin the bearing in the bore of the power whee 2. In combination witha power wheel, a shaft having a reduced 7 end extending through the oreof the said wheel. and the bore of the saidwheel being provided withlongitudinal grooves, of a bearing having a reduced and eccentricallyarranged bore to receive the reduced end of the shaft and said bearingdesigned to receive the reduced end ofthe shaft, the bearing having itsupper end provided with outstanding lugs which normally rest upon theupper face of the power wheel, the upper enlarged portion of the bearinghaving a longitudinal groove designed to register with ,ohe of the thesleeve, a sha grooves in the hereof the power wheel, a key between thisgroove and one of the grooves in the bore of the power wheel, and thelugs of.the said bearing being oi a number and of a size to freely slidethrou h the grooves in the bore of the power whee when the bearin isturned upon the power wheel to bring t e lugs into alinement with thesaid grooves upon the removal of the key.

3. In combination with a plate havin' a depending sleeve a removable capplate %or i it having a reduced end recelved 1n the sleeve, and a powerwheel having a bore surrounding the reduced end of the shaftand the saidbore being formed with longitudinally extending grooves, of a bearingmember having an upper enlarged portion received in the bore of thepower wheel and the said upper portion provided with outstanding lugsresting upon the power wheel and said lugs being spaced whereby the samemay be brought to register with the'grooves in the bore of the powerwheel to permit of the separation of the said bearingfrom'the saidwheel, said bearing having its enlarged portion provided with "a groovedesigned to register with one of the grooves in the bore of the powerwheel, a key removably received in the alining grooves, said bearinghaving an eccentric bore to receive the end of the shaft, a bushingsurrounding the reduced end of the bearing and resting upon the 'capplate of the sleeve, and an element passing transversely through thesleeve and bushin below the bearing and the reduced end 0 theshaftforsecurin the bushing in the sleeve.- In testlmony w ereof I afiixmy signature.

7 GEORGE n. HOWARD,-

